I really don't think you should be using the modern feminist groups as an example of much of anything. Not unless you want to go down the superiority
route, as opposed to mere 'equality'.
Anyway, it isn't that it's "necessarily exclusive" as much as it is, it does not include, and therefor groups like MRAs are considered a threat.
As we've seen quite clearly from feminism.
Recognizing inequality does not require you to consider it a "blob". Rather, it simply requires you to advocate for all
people, united, under the grounds of being people
. We are all the same. Female, male, black, white, it doesn't matter. We have the same rights because we are human, That is how it should be. This isn't pretending the reasons one group might be oppressed doesn't exist, it's simply stating the reason why it shouldn't